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CPU capability list - Maximum DRAM Frequency

03-04-2016, 03:00 PM

When building a system with a specific target in mind, special hardware may be necessary to achieve that goal. By having an idea of what your CPU is capable of, you can build the system around that. Here is a list of each CPU's typical capability. Depending on your luck and OC ability, your CPU may be capable of higher, but this list is for guaranteed results. With a compatible motherboard using the G.Skill QVL List, you can expect high performance results with the proper combination of hardware.

Please feel free to post your own personal results especially when using non-K series CPUs; non-K series CPUs are not designed for overclocking, so we usually do not work with those particular models and will have limited data.

ProcessorDRAM Frequency capability

These ratings are for 1 DIMM per Channel.

ie. if using full slots, DRAM Frequency may need to be lowered; with certain motherboards, you can increase CPU memory controller Voltage to force the system to support more modules or a higher DRAM Frequency.

3570K: Tested four of those, all could do DDR3-2400 and two had no issues with DDR3-2666 either, on ASUS ROG Maximus V Extreme (Z77).

3770K: My 3770K has no issues with DDR3-2800, on Gigabyte Z77X-UP5 TH.

4770K/4790K: Never had one that failed to reach DDR3-2800 on a decent MB, Gigabyte Z87X-OC / Z97X-SOC Force in my case. From quick tests with single sided MFR my current 4790K maxed out around DDR3-3400, but it might also have been the weak-sauce retail memory =)

6700K: Did max out any memory i threw at it so no final judgement yet, but DDR4-3733 seems pretty safe on ASUS ROG Maximus VIII Gene (Z170). If you are using iGFX you might need to keep it lower depending on VCCSA/VCCIO needed, because of black-out issues with the onboard HDMI when those voltages hit certain thresholds.